Three-ring type inflatable cover

Abstract

The utility model discloses a three-ring type inflation cover, and belongs to the technical field of tire inflation equipment. The device comprises an inner gas hood, a middle gas hood and an outer gas hood which are coaxially nested, and the inner gas hood, the middle gas hood and the outer gas hood are driven by a cylinder to realize axial lifting switching. The inner gas hood is driven by a first cylinder, an inner clamping ring at the top of the inner gas hood is in sliding fit with a middle clamping ring of the middle gas hood, and the outer gas hood is driven by an outer cylinder and sleeves the outer side of the middle gas hood; a locking air cylinder is arranged on the side wall of the outer gas hood, and the position of the gas hood is locked by being inserted into locking holes of the inner clamping ring and the middle clamping ring. The three groups of stepped ring structures ensure the sealing performance during gas hood switching, and gas leakage is avoided. An air pipe penetrates through the middle air hood connecting plate to be communicated with the inner air hood, and inflation of tires of different sizes is adapted through lifting switching. The device is compact in structure, free of extra centering and convenient to maintain, movement stability is improved through the design of the guide columns and the floating connectors, locking balance is guaranteed through uniform distribution of the locking air cylinders, and the device is suitable for efficient inflation operation of an automatic tire production line.

Description

Technical Field

[0001] This utility model belongs to the technical field of tire inflation equipment, and specifically refers to a three-ring inflation cover. Background Technology

[0002] The tire assembly consists of the rim and the tire. During automated production and assembly, the tire usually needs to be inflated to facilitate subsequent assembly operations. Due to the automated production process, inflation is typically achieved by squeezing the bottom of the annular inflation sleeve towards the tire shoulder, creating a gap between the tire shoulder and the edge of the rim. High-pressure gas is then passed through this gap via an air tube connected to the inflation sleeve to inflate the tire.

[0003] Chinese patent application number 201721523448.7 discloses a turret ring inflator, which replaces the inflation ring by rotating the turret to inflate tires of different sizes. Another Chinese patent publication number CN104108381B discloses a tire inflator that inflates tires of different sizes by moving inflation hoods of different sizes on a frame. However, both of these publications require non-axial movement of the inflation ring to inflate tires of different sizes. Before each subsequent inflation operation, the moving inflation ring needs to be re-centered to ensure it is concentric with the tire, guaranteeing accurate inflation. Furthermore, these inflators or inflator devices are structurally complex and have high maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a three-ring inflation cover that allows several inflation rings to be kept in the axial direction while being easily switched to accommodate inflation operations of tires of different sizes.

[0005] The purpose of this utility model is achieved as follows:

[0006] A three-ring inflatable hood includes a horizontally placed intermediate hood connecting plate, an inner hood driven by a first cylinder at the bottom of the intermediate hood connecting plate, an inner locking ring fixed at the top of the inner hood, a first stepped ring formed between the bottom of the inner locking ring and the top of the inner hood, an intermediate hood provided at the bottom of the intermediate hood connecting plate, and an intermediate locking ring fixed at the top of the intermediate hood with its top fixed to the bottom of the intermediate hood connecting plate, the inner locking ring sliding along the inner wall of the intermediate locking ring via the first cylinder, and a second stepped ring formed between the intermediate locking ring and the top of the intermediate hood, an outer hood sleeved on the outer wall of the intermediate hood, a plurality of outer cylinders for driving the outer hood to slide up and down provided on the outer edge of the intermediate hood connecting plate, and a third stepped ring provided on the inner wall of the outer hood.

[0007] Several radially arranged locking cylinders are fixed on the side wall of the outer air cover. The output end of the locking cylinder passes through the side wall of the outer air cover. The side wall of the inner locking ring and the side wall of the middle locking ring are provided with locking holes that are compatible with the output end of the locking cylinder. The side wall of the inner locking ring has three layers of locking holes, and the side wall of the middle locking ring has two layers of locking holes.

[0008] Two sets of air pipes are installed on the intermediate air hood connecting plate, and the bottom of the air pipes penetrates into the inner air hood and communicates with the inner cavity of the inner air hood.

[0009] The present invention is further configured such that a plurality of guide columns are fixed on the upper edge of the outer air cover, a lifting seat plate is provided above the middle air cover connecting plate, a guide hole for the guide columns to pass through is provided on the lifting seat plate, and a hydraulic cylinder connecting seat is fixed on the top of the lifting seat plate.

[0010] The present invention is further configured such that the height between the first stepped ring and the bottom of the inner air hood is less than the height between the second stepped ring and the bottom of the middle air hood, and the height between the second stepped ring and the bottom of the middle air hood is less than the height between the third stepped ring and the bottom of the outer air hood.

[0011] The present invention is further configured such that the first cylinder includes a cylinder body whose end is fixed to the top of the inner air cover, a floating joint is fixed on the output end of the cylinder body, and a floating seat adapted to the floating joint is fixed on the bottom of the intermediate air cover connecting plate.

[0012] The present invention is further configured such that the number of locking cylinders is four sets, and they are evenly distributed on the side wall of the outer air cover.

[0013] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0014] 1. The three-ring inflatable cover provided by this utility model can inflate tires of different sizes by switching between three sets of air covers arranged coaxially. The air covers can be easily switched by simple lifting and lowering. Moreover, the device has a simple structure and low maintenance cost.

[0015] 2. The further provided guide columns of this utility model enable the inflatable cover to move up and down, facilitating the assembly of the inflatable cover inside the equipment.

[0016] 3. This utility model adopts different designs for the corresponding heights on each step ring, which can achieve accurate storage when using inflatable covers of different sizes, prevent large gaps when pressing down on the tire shoulder, and prevent air leakage.

[0017] 4. Furthermore, the floating joint provided in the first cylinder can provide a certain offset redundancy when the first cylinder drives the inner air cover to move up and down.

[0018] 5. The present invention further provides four sets of locking cylinders, which can evenly and stably lock and control the intermediate air cover and the inner air cover, and realize the switching of air covers of different sizes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the external air cover of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the intermediate air cover of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the inner air hood of this utility model;

[0024] Figure label:

[0025] 1-Intermediate air hood connecting plate; 10-Air pipe; 11-Floating seat;

[0026] 2-Inner air hood; 20-Inner retaining ring; 21-First step ring;

[0027] 3-First cylinder; 30-Cylinder body; 31-Floating joint;

[0028] 4-Intermediate air shroud; 40-Intermediate snap ring; 41-Second step ring;

[0029] 5-External air shroud; 50-External cylinder; 51-Third step ring;

[0030] 6-Locking cylinder; 60-Locking hole;

[0031] 7-Lifting seat plate; 70-Guide hole; 71-Cylinder connecting seat. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1 — Figure 5 :

[0033] A three-ring inflatable cover includes a horizontally placed intermediate cover connecting plate 1, an inner cover 2 driven by a first cylinder 3 at the bottom of the intermediate cover connecting plate 1, an inner locking ring 20 fixed at the top of the inner cover 2, a first stepped ring 21 formed between the bottom of the inner locking ring 20 and the top of the inner cover 2, an intermediate cover 4 provided at the bottom of the intermediate cover connecting plate 1, and an intermediate locking ring 40 fixed at the top of the intermediate cover 4 with its top fixed to the bottom of the intermediate cover connecting plate 1, the inner locking ring 20 sliding along the inner wall of the intermediate locking ring 40 via the first cylinder 3, and a second stepped ring 41 formed between the intermediate locking ring 40 and the top of the intermediate cover 4, an outer cover 5 sleeved on the outer wall of the intermediate cover 4, a plurality of outer cylinders 50 for driving the outer cover 5 to slide up and down provided on the outer edge of the intermediate cover connecting plate 1, and a third stepped ring 51 provided on the inner wall of the outer cover 5.

[0034] A number of radially arranged locking cylinders 6 are fixed on the side wall of the outer air cover 5. The output end of the locking cylinder 6 passes through the side wall of the outer air cover 5. The side wall of the inner locking ring 20 and the side wall of the middle locking ring 40 are provided with locking holes 60 that are adapted to the output end of the locking cylinder 6. The side wall of the inner locking ring 20 has three layers of locking holes 60, and the side wall of the middle locking ring 40 has two layers of locking holes 60.

[0035] Two sets of air pipes 10 are installed on the intermediate air cover connecting plate 1, and the bottom of the air pipes 10 are inserted into the inner air cover 2 and connected to the inner cavity of the inner air cover 2.

[0036] The specific implementation methods are as follows:

[0037] The inner air cover 2 is driven downward by the first cylinder 3. At this time, the output end of the locking cylinder 6 passes through the outer air cover, the top locking hole of the middle retaining ring 40 and the top locking hole of the inner retaining ring in sequence, so that the inner air cover is in the bottom position. The air pipe is used to ventilate the inner air cover, so as to inflate the tire matched with the inner air cover.

[0038] The inner air cover is moved upward by the first cylinder 3, causing the upper end face of the first stepped ring 21 to abut against the lower end face of the second stepped ring 41. At this time, the output end of the locking cylinder 6 passes through the outer air cover, the top locking hole of the intermediate locking ring 40, and the middle locking hole of the inner locking ring 20 in sequence. This puts the intermediate air cover in the bottom position. At this time, the bottom of the intermediate air cover 4 wraps around the inner air cover. The inner air cover 2 is still connected to the air pipe, so the tire matched with the intermediate air cover 4 can also be inflated.

[0039] The first cylinder 3 drives the inner air cover 2 to move upward, causing the upper end face of the first stepped ring 21 to abut against the lower end face of the second stepped ring 41. The outer cylinder drives the outer air cover downward, causing the lower end face of the third stepped ring 51 to abut against the upper end face of the second stepped ring 41. At this time, the output end of the locking cylinder 6 passes through the locking hole at the bottom of the outer air cover, the middle locking ring 40, and the inner locking ring 20. This achieves the bottom of the outer air cover being at its lowest position, where it encloses the middle and inner air covers. The inner air cover 2 remains connected to the air pipe, allowing the tire matched with the outer air cover 5 to be inflated.

[0040] It is worth mentioning that during the process of each stepped ring abutting, the tight fit of the end face can be shown after abutting, thereby achieving the effect of sealing the connection, so that when the inner air hood is connected to the air pipe, it can also be connected to the intermediate air hood or the outer air hood.

[0041] Preferably, a plurality of guide posts 52 are fixed on the upper edge of the outer air cover 5, and a lifting seat plate 7 is provided above the middle air cover connecting plate 1. The lifting seat plate 7 is provided with guide holes 70 for the guide posts 52 to pass through, and a hydraulic cylinder connecting seat 71 is fixed on the top of the lifting seat plate 7.

[0042] In the above structure, the lifting seat 7 provides lifting functionality for the entire device and also facilitates the assembly of the inflation device within the equipment. The guide posts and guide holes provide good guiding stability during vertical lifting and sliding.

[0043] Preferably, the height between the first stepped ring 21 and the bottom of the inner air hood 2 is less than the height between the second stepped ring 41 and the bottom of the middle air hood 4, and the height between the second stepped ring 41 and the bottom of the middle air hood 4 is less than the height between the third stepped ring 51 and the bottom of the outer air hood 5.

[0044] The height difference between the different stepped rings and the air hood ensures that the bottom of each air hood is at the very bottom when using different air hoods for inflation, facilitating normal inflation.

[0045] Preferably, the first cylinder 3 includes a cylinder body 30 whose end is fixed to the top of the inner air cover 2, a floating joint 31 is fixed on the output end of the cylinder body 30, and a floating seat 11 adapted to the floating joint 31 is fixed at the bottom of the intermediate air cover connecting plate 1.

[0046] In the above structure, since the inner air cover 2 is driven independently by the first cylinder, the output end of the cylinder body is subjected to a large force. The use of the floating joint 31 can provide a certain offset redundancy and ensure the structural strength of the output end of the cylinder body.

[0047] Preferably, there are four sets of locking cylinders 6, evenly distributed on the side wall of the outer air cover 5. The four sets of locking cylinders also correspond to four sets of locking holes, located on the third stepped ring, the intermediate retaining ring, and the inner retaining ring. The multiple sets of locking cylinders provide a stronger locking effect.

[0048] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A three-ring inflatable cover, characterized in that, The system includes a horizontally positioned intermediate air hood connecting plate (1), an inner air hood (2) driven by a first cylinder (3) at the bottom of the intermediate air hood connecting plate (1), an inner retaining ring (20) fixed at the top of the inner air hood (2), a first stepped ring (21) formed between the bottom of the inner retaining ring (20) and the top of the inner air hood (2), an intermediate air hood (4) provided at the bottom of the intermediate air hood connecting plate (1), and a top of the intermediate air hood (4) fixed to the bottom of the intermediate air hood connecting plate (1). An intermediate snap ring (40) is provided, and the inner snap ring (20) slides along the inner wall of the intermediate snap ring (40) through the first cylinder (3). A second stepped ring (41) is formed between the intermediate snap ring (40) and the top of the intermediate air cover (4). An outer air cover (5) is sleeved on the outer wall of the intermediate air cover (4). A plurality of outer cylinders (50) for driving the outer air cover (5) to slide up and down are provided on the outer edge of the intermediate air cover connecting plate (1). A third stepped ring (51) is provided on the inner wall of the outer air cover (5). A number of radially arranged locking cylinders (6) are fixed on the side wall of the outer air cover (5). The output end of the locking cylinder (6) passes through the side wall of the outer air cover (5). The side wall of the inner snap ring (20) and the side wall of the middle snap ring (40) are provided with locking holes (60) that are compatible with the output end of the locking cylinder (6). The side wall of the inner snap ring (20) has three layers of locking holes (60), and the side wall of the middle snap ring (40) has two layers of locking holes (60). Two sets of air pipes (10) are installed on the intermediate air cover connecting plate (1), and the bottom of the air pipes (10) is inserted into the inner air cover (2) and connected to the inner cavity of the inner air cover (2).

2. The three-ring inflatable cover according to claim 1, characterized in that, The upper edge of the outer air cover (5) is fixed with several guide posts (52), and a lifting seat plate (7) is provided above the middle air cover connecting plate (1). The lifting seat plate (7) is provided with guide holes (70) for the guide posts (52) to pass through. The top of the lifting seat plate (7) is fixed with a hydraulic cylinder connecting seat (71).

3. A three-ring inflatable cover according to claim 1, characterized in that, The height between the first stepped ring (21) and the bottom of the inner air hood (2) is less than the height between the second stepped ring (41) and the bottom of the middle air hood (4), and the height between the second stepped ring (41) and the bottom of the middle air hood (4) is less than the height between the third stepped ring (51) and the bottom of the outer air hood (5).

4. A three-ring inflatable cover according to claim 1, characterized in that, The first cylinder (3) includes a cylinder body (30) whose end is fixed to the top of the inner air cover (2). A floating joint (31) is fixed on the output end of the cylinder body (30). A floating seat (11) adapted to the floating joint (31) is fixed on the bottom of the intermediate air cover connecting plate (1).

5. A three-ring inflatable cover according to claim 1, characterized in that, The number of locking cylinders (6) is four, and they are evenly distributed on the side wall of the outer air cover (5).

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